I had Kurt Busiek sign this issue at Comic-Con a few years ago and told him it was my favorite comic book story that I'd ever read. He replied that he thought it was probably the best thing he had ever written. He hopes to surpass it someday, but, if he doesn't, he's okay with it as a high point.
I know that my own enjoyment of a particular piece of art shouldn't depend on what other people think of the same piece, but I still can't help but find his response to be very validating.